TTY: call tty_port_destroy in the rest of drivers

After commit "TTY: move tty buffers to tty_port", the tty buffers are
not freed in some drivers. This is because tty_port_destructor is not
called whenever a tty_port is freed. This was an assumption I counted
with but was unfortunately untrue. So fix the drivers to fulfil this
assumption.

To be sure, the TTY buffers (and later some stuff) are gone along with
the tty_port, we have to call tty_port_destroy at tear-down places.
This is mostly where the structure containing a tty_port is freed.
This patch does exactly that -- put tty_port_destroy at those places.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 9700d34b20a3..d9056dac4ea1 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -673,6 +673,7 @@ static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
         if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
                 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
                                 board, aiop, chan);
+                tty_port_destroy(&info->port);
                 kfree(info);
                 return;
         }
@@ -2357,6 +2358,7 @@ static void rp_cleanup_module(void)
         for (i = 0; i < MAX_RP_PORTS; i++)
                 if (rp_table[i]) {
                         tty_unregister_device(rocket_driver, i);
+                        tty_port_destroy(&rp_table[i]->port);
                         kfree(rp_table[i]);
                 }